What is VPN

What is VPN ?

• VPN stands for Virtual Private Network.
• VPN is a service which is provided  by some third parties to access the web privately and safely.
• As we said VPN is used to access web safely and privately,but how?
• Before we know how VPN works we have to know how a normal webpage request works.
• If you go through our previous post you will understand how the request is processed.

Link :https://iamafutureprogrammer.blogspot.com/2019/08/browsing-webworking.html

• when you want to visit a webpage called www.abcd.com ,your request will be routed to the respective webserver on which the website is hosted.
• In the process of routing ,the request packet has the detail of the ip address from which the request is made (if you want to know about ip address visit by previous post ,Link :https://iamafutureprogrammer.blogspot.com/2019/08/what-is-ip-adress.html ) and the each router that routes the request also stores the ip address and the destination webpage address for easy routing of further request from the source.
• Here you can find our that your identity is exposed on the web now.
• To avoid exposing yourself on the web vpn is used.

How VPN works?

• when the request is made from the source the request is forwarded to the vpn server and from the vpn server the request is made to the corresponding webserver and the response is redirected by the vpn server to the source node.
• here you can see that the vpn servers ip address is only know on the web and the user remains anonymous.

when you can use vpn?

• suppose a website is blocked in your region(e.g : if website www.abc.com is blocked in India) then if you want to access the website you can use vpn by setting up your vpn server to some country where the website is available(e.g : if that site is available in France then you set your vpn server to France).
• when you are having a highly confidential documents and want to send to a person over web,then you can use vpn to privately send it through the virtual private network.
• In a local area network, such a school network or college network  there may me no access to social media sites. here you can use vpn to bypass the constraints.
• using vpn encrypts your data on the travel over the internet.
• you can use vpn for accesing torrents.

Some of the free VPN provoiders are,

• tunnelbear
• turbovpn
• windscribe
• hide.me
• surfeasy
• proton vpn
• hotspot shield free vpn   etc....

There are separate  vpn providers for mobile phones and PC's.

There are both paid and free vpn services,but some extra features are there in paid vpn services.

You can read my previous blogs at  https://iamafutureprogrammer.blogspot.com/

Thankyou......